Rotating shaft seal Patent

Liquid-vapor interface seal design for turbine rotating shafts including helical and molecular pumps and liquid cooling of mercury vapo

Minor salivary gland sialolithiasis: a clinical diagnostic challenge

Sialolithiasis is a non-neoplastic salivary gland disease that rarely affects the minor salivary glands. There are no guidelines in the literature which can suggest which is the best surgical approach to treat Minor Salivary Glands Sialolithiasis (MSGL). The present case was of a 48-year-old male patient complaining of painful swelling localized in the left back-commissural zone which was 0.5 mm in diameter, for which surgical enucleation approach was done and in that some small calcific masses ranging from 0.2 to 4 mm in diameter were found. They were surrounded by granulation tissue and associated with small pus oozing. Histopathological examination was carried out leading to a final diagnosis of MSGL

Quantum erasure in the presence of a thermal bath: the effects of system-environment microscopic correlations

We investigate the role of the environment in a quantum erasure setup in the cavity quantum electrodynamics domain. Two slightly different schemes are analyzed. We show that the effects of the environment vary when a scheme is exchanged for another. This can be used to estimate the macroscopic parameters related to the system-environment microscopic correlations.Comment: 10 pages, 2 figure

Viral Evolution and Adaptation as a Multivariate Branching Process

In the present work we analyze the problem of adaptation and evolution of RNA virus populations, by defining the basic stochastic model as a multivariate branching process in close relation with the branching process advanced by Demetrius, Schuster and Sigmund ("Polynucleotide evolution and branching processes", Bull. Math. Biol. 46 (1985) 239-262), in their study of polynucleotide evolution. We show that in the absence of beneficial forces the model is exactly solvable. As a result it is possible to prove several key results directly related to known typical properties of these systems like (i) proof, in the context of the theory of branching processes, of the lethal mutagenesis criterion proposed by Bull, Sanju\'an and Wilke ("Theory of lethal mutagenesis for viruses", J. Virology 18 (2007) 2930-2939); (ii) a new proposal for the notion of relaxation time with a quantitative prescription for its evaluation and (iii) the quantitative description of the evolution of the expected values in four distinct regimes: transient, "stationary" equilibrium, extinction threshold and lethal mutagenesis. Moreover, new insights on the dynamics of evolving virus populations can be foreseen.Comment: 39 pages, 3 figures. International Symposium on Mathematical and Computational Biology, Tempe, Arizona, USA, 6 - 10 November 2012. Fernando Antoneli, Francisco Bosco, Diogo Castro, And Luiz Mario Janini (2013) Viral Evolution and Adaptation as a Multivariate Branching Process. Biomat 2012: pp. 217-243. Ed.: R. P. Mondaini. World Scientific, Singapor

A photochemical study of the kinetics of the reactions of NH2 with phosphine, ethylene, and acetylene using flash photolysis-laser induced fluorescence

The photochemistry of the reactions of NH2 was investigated in an attempt to explain the existence of an abundance of ammonia in the Jovian atmosphere. The production of ammonia reservoirs from the coupling of ammonia with other atmospheric constituents was considered. The rate constants for the reactions of NH2 radicals with phosphine, acetylene, and ethylene were measured. Flash photolysis was used for the production of NH2 radicals and laser induced fluorescence was employed for radical detection. It was determined that the rates of the reactions were too slow to be significant as a source of ammonia reservoirs in the Jovian atmosphere

Quantifying the Thermal Fatigue of CPV Modules

A method is presented to quantify thermal fatigue in the CPV die-attach from meteorological data. A comparative study between cities demonstrates a significant difference in the accumulated damage. These differences are most sensitive to the number of larger (ΔT) thermal cycles experienced for a location. High frequency data (\u3c1/min) may be required to most accurately employ this method

X-band scattering measurements of earth surfaces from an aircraft

Airborne equipment for measuring X band scattering of earth surface

Effect of extraction processes on physiochemical properties and antioxidant activity of virgin coconut oil

The present study was to investigate the physiochemical and antioxidant properties of virgin coconut oil (VCO) through different extraction processes including aqueous extraction (AE), aqueous enzymatic extraction (AEE), cold extraction (CE), hotplate heating process (HPH) and microwave extraction (MOH). Physiochemical properties of all the extracted oils were observed to be within the range of Asian and Pacific Coconut Community (APCC) standards with lower iodine, peroxide and free fatty acid values in AE, AEE and CE than those observed in MOH and HPH methods with reference to commercial VCO. However, total phenolic content ranged from 26.4 to 42.1 mg GAE 100 g-1 of oil with the effect of extraction processes. As correlation analysis showed significant correlation between total phenolic content and 1,1-diphenyl-2-picryl-hydrazyl (DPPH) scavenging activity, β-carotene bleaching activity and total antioxidant activity, oils extracted by CE, AE and AEE had the highest antioxidant activity corresponding to their highest phenolic content as compared to those of HPH and MOH with reference to commercial VCO. Hence, the present study concluded that CE, AE and AEE could extract VCO with desirable quality and highest antioxidant activity than the other methods of extraction